3. Choose the correct options.

(Chọn các phương án đúng.)

1. I want to go jogging this afternoon, but it should/may/has to/must rain.

2. Susan can/has to/is able to/might fill out a form to join the gym. It’s a rule.

3. Gym members mustn’t/don’t have to/didn’t have to/couldn’t wear sandals inside the gym. It’s against the rule.

4. Leonardo could/must/had to/should ride a bike when he was only four.

5. You mustn’t/shouldn’t/don’t have to/couldn’t eat too many sugary snacks. It can cause weight gain.

Bài 1 :

Put the correct answer into the box.

Bài 2 :

Put the correct answer into the box.

Bài 3 :

Put the correct answer into the box.

Bài 4 :

Put the correct answer into the box.

Bài 5 :

Put the correct answer into the box.

Bài 6 :

Choose the best answer.

Your grandparents live far from you, so you  _______ talk to them on the phone regularly.

Bài 7 :

Choose the best answer.

You _____ stay up at night, which is not good for your health.

Bài 8 :

Choose the best answer.

I can watch TV and play computer games on Sunday because I _____ go to school that day.

Bài 9 :

Choose the best answer.

I ______ stay overnight at my friend’s house. My parents are very strict about this.

Bài 10 :

Choose the best answer.

You ______ stare at the computer screen for too long. It is really bad for your eyesight.

Bài 11 :

Choose the best answer.

My friend says: "You ____ drink champagne. You can have a coke or fruit juice instead.

Bài 12 :

Choose the best answer.

You_______ drink if you're going to drive afterwards.

Bài 13 :

Choose the best answer.

She_______ speak English well because her current job needs it.

Bài 14 :

Choose the best answer.

I ______ go home now to finish my homework.

Bài 15 :

Choose the best answer.

You ______  pick up Tom at the airport because Judy will pick him up.  

Bài 16 :

Choose the best answer.

She_____ stay at home to look after her children because there is no one to help her.

Bài 17 :

Choose the best answer.

You _____ become more responsible by sharing the housework with other people in our family.

Bài 18 :

Choose the best answer.

My grandparents live in the suburbs, so whenever we visit them, we ______ take a bus.

Bài 19 :

Choose the best answer.

We _____ buy souvenirs for Sally. She doesn't like them.

Bài 20 :

Choose the best answer.

If you are a member of the club, you ______ pay to use these facilities because they are included in the membership fee.

Bài 21 :

 may, might, could, can, must (có thể, phải)

1. Read examples 1-5. What do the modal verbs in blue mean? Write possibly, definitely or definitely not.

(Đọc ví dụ 1-5. Các động từ khuyết thiếu màu xanh có nghĩa là gì? Viết “possibly” (có khả năng), “definitely” (chắc chắn) hoặc “definitely not” (chắc chắn không).)

1. They could be expressing sadness. _____

2. The evidence suggests that animals must feel something. _____

3. They can’t simply be like robots. _____

4. We may know more in the future. _____

5. They might, perhaps, have emotions. _____

Bài 22 :

2. Choose the correct options to complete the rules.

(Chọn các phương án đúng để hoàn thành các quy tắc.)

RULES (Quy tắc)

1. We use may, might and could to express possibility / certainty.

2. We use must and can’t when we are certain / not certain about things.

3. The modal verbs in exercise 1 change / don’t change in the he, she and it forms.

4. We always / never use to after modal verbs.

Bài 23 :

3. Complete the sentences with appropriate modal verbs.

(Hoàn thành câu với động từ khuyết thiếu thích hợp.)

1. She’s smiling, so she _____ be unhappy.

2. I’m not sure, but they _____ live in Huế.

3. You’re going to Canada? You _____ be excited!

4. Orcas are rare here, but you _____ see one if you’re lucky.

5. It _____ be frightening to see a shark when you’re swimming.

6. England aren’t a great football team. They _____ not win the match tomorrow.

Bài 24 :

 USE IT! (SỬ DỤNG NÓ!)

4. Work in pairs. Exchange opinions about ideas 1-6 using words from the box and the modal verbs.

(Làm việc theo cặp. Trao đổi ý kiến về các ý 1-6 bằng cách sử dụng các từ trong khung và các động từ khuyết thiếu.)

1. horse riding (cưỡi ngựa)

2. elephants (voi)

3. this film (bộ phim này)

4. my exam results (kết quả bài kiểm tra của tôi)

5. swimming with dolphins (bơi cùng cá heo)

6. spiders (nhện)

E.g.:

A: Horse riding might be fun. (Cưỡi ngựa có thể rất thú vị.)

B: Really? I think it must be frightening. (Thật sao? Tôi nghĩ nó hẳn là đáng sợ.)

Bài 25 :

Write five sentences about the animal emotions using modal verbs.

(Viết năm câu về cảm xúc của động vật sử dụng động từ khiếm khuyết.)

Bài 26 :

 Ability: can, could, be able to (Khả năng: can, could, be able to)

Study the examples and choose the correct options to complete the rules.

(Nghiên cứu các ví dụ và chọn các phương án đúng để hoàn thành các quy tắc.)

- You can’t turn down drums. (Bạn không thể làm giảm tiếng trống.)

- I couldn’t hear you. (Tôi đã không thể nghe thấy bạn.)

- One day you’ll be able to play the whole song. (Một ngày nào đó bạn sẽ có thể chơi được toàn bộ bài hát.)

RULES (Quy tắc)

1. We use can / could to express an ability in the past.

2. We use can / could to express an ability in the present.

3. We use be able to / could to express an ability in the future.

Bài 27 :

2. Complete the sentences with the correct form of can, could or be able to.

(Hoàn thành các câu với dạng đúng của “can”, “could” hoặc “be able to”.)

1. Why don’t you turn up the music. Then we’ll all _____ sing along.

2. I’m going to have singing lessons. Then I might _____ join a band.

3. We _____ turn on the TV because it was broken.

4. I really _____ exercise at the moment. I’m too tired.

5. _____ you speak English when you were three?

Bài 28 :

3. Make sentences using phrases from the boxes.

(Đặt câu bằng cách sử dụng các cụm từ trong khung.)

- I’m sure that people will be able to speak with animals in the future.

(Tôi chắc chắn rằng con người sẽ có thể nói chuyện với động vật trong tương lai.)

Bài 29 :

 Advice and obligation: should, must, have to

(Lời khuyên và nghĩa vụ: should, must, have to)

4. Read examples 1-6. Write A (advice), O / P (obligation or prohibition) or N / O (no obligation).

(Đọc ví dụ 1-6. Viết A (lời khuyên), O / P (nghĩa vụ hoặc cấm đoán) hoặc N / O (không bắt buộc).)

1. You must be careful. _____

(Bạn phải cẩn thận.)

2. You mustn’t listen to music when you’re cycling. _____

(Bạn không được nghe nhạc khi đạp xe.)

3. You have to concentrate if you’re on the road. _____

(Bạn phải tập trung khi đang di chuyển trên đường.)

4. You don’t have to practise all day every day. _____

(Bạn không cần phải luyện tập cả ngày.)

5. You should look where you’re going. _____

(Bạn nên nhìn xem mình đang đi đâu.)

6. You could have a break sometimes. _____

(Đôi khi bạn có thể nghỉ ngơi.)

Bài 30 :

6. Choose the correct options.

(Chọn những lựa chọn đúng.)

1. You mustn’t / shouldn’t wake her up. She looks so peaceful.

2. You don’t have to / mustn’t help, but you can if you’ve got time.

3. You must / should turn off all music after midnight. That’s the law.

4. I mustn’t / don’t have to eat chocolate. I’m allergic to it.

5. You have to / don’t have to be in bed to feel relaxed.

6. We shouldn’t / don’t have to distract her. She’s concentrating.